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结构分析最关键的部分是建立恰当的模型,即使在另外那些采用古典方法比较合适的地方,强有力的计算机也能支持工程师们去使用建立的模型。本文指出使用建立在或者是著名的剪切桁条法或是简单的土柱公式的基础上的简单闭合公式能够
The most crucial part of structural analysis is to set up the right model, and even in those other places where classical methods are appropriate, powerful computers can support engineers to use the established models. This paper points out that the simple closed formula based on either the well-known shear stringer method or the simple soil column formula